WATERAX
MARK-3 Owner's Manual
03/2016
– Page 21 of 52
Troubleshooting
Carburetor Flooding
Dirt or Foreign
Particles Preventing
Inlet Needle From
Seating
Remove, clean and/or
replace.
Diaphragm Lever
Spring Not Seated on
Lever Dimple
Remove lever and
reinstall.
Diaphragm Improperly
Installed in Carburetor
Replace diaphragm or
correct installation.
Improper Use of Choke
Disengage/Open choke.
Engine Will Not Accelerate
Low Speed Mixture Set
Too Lean
Enrich low speed
adjustment.
Diaphragm Gasket
Leaking
Replace.
Incorrect Setting On
Diaphragm Lever
Reset.
Main Fuel Orifice
Plugged
Remove diaphragm
cover, diaphragm,
diaphragm lever and
high speed adjusting
screw. Clean out orifice
by blowing air through
high speed adjustment
threaded hole.
Diaphragm Cover
Plate Loose
Tighten.
Engine Will Not Idle
Incorrect Idle Speed
Adjustment
Adjust idle speed.
Dirty Nozzle Check
Valve
Clean or replace.
Idle Discharge Ports or
Channels Clogged
Blow out with
compressed air or flush
with gasoline.
Welch Plug Covering
Idle Discharge Ports
Not Sealing
Replace welch plug.
Throttle Shutter
Cocked in the Throttle
Bore Causing Fast Idle
Reset.
Engine Runs Out Lean
Fuel Tank Vent Not
Working Properly
Clean or replace.
Ruptured Fuel Pump
Diaphragm
Replace.
Leak in Fuel System
from Tank to Pump
Tighten or replace
fittings and lines.
Main Fuel Orifice
Plugged
Clean.
Carburetor Runs Rich With High Speed (Main) Adjustment Shut Off
The Nozzle Channel
Plug or Nozzle Check
Valve Cage Is Not
Sealing
Install new plug or new
cage.
